docs: def toggle_spot_cfg(self):
          """Show the dialog where you select graphics and a name for a place,
          or hide it if already showing.
  
          """
          if self.app.manager.current == 'spotcfg':
              dummyplace = self.screendummyplace
              self.ids.placetab.remove_widget(dummyplace)
              dummyplace.clear()
              if self.app.spotcfg.prefix:
                  dummyplace.prefix = self.app.spotcfg.prefix
                  dummyplace.num = dummynum(
                      self.app.character, dummyplace.prefix
                  ) + 1
              dummyplace.paths = self.app.spotcfg.imgpaths
              self.ids.placetab.add_widget(dummyplace)
          else:
              self.app.spotcfg.prefix = self.ids.dummyplace.prefix
          self.app.spotcfg.toggle()